Made in 1960 for its centennial, this pictorial map shows the route of the short-lived Pony Express, a mail service using relays of horse-mounted riders between MO and OR that operated from April 3, 1860, to October 26, 1861. Zoom in on the details here: https://t.co/k81S4tD3V1…
— Kenneth Samson (@PangurBanC) Dec 29, 2021
from Twitter https://twitter.com/PangurBanC
December 29, 2021 at 10:03AM
via PangurBanC
https://linktr.ee/samsonkg
